Aliphatic TPU for Transparent & Optical Parts | Clear, Non-Yellowing, Impact-Resistant
Aliphatic TPU – Transparent & Optical Parts
Aliphatic TPU grades for transparent and optical parts, combining high clarity, non-yellowing performance and
impact resistance. Suitable for injection-molded covers, lenses, protective housings and transparent functional
components where aesthetics and long-term outdoor stability are important.
Non-Yellowing
Impact Resistant
Low Haze
Shore 80A–45D
Applications
Aliphatic TPU Optical Series is used where transparency, toughness and non-yellowing are required:
- Protective lens covers for lighting, sensors and indicators.
- Transparent housings and windows for devices and instruments.
- Soft optical bezels and overmolded clear buttons on electronics.
- Clear functional components that need impact resistance and flexibility.
Typical Grades for Transparent & Optical Parts
| Grade | Hardness | Key Performance | Processing | Typical Use |
|---|---|---|---|---|
| TPU-ALP Optical 80A | 80A | Very high clarity, flexible, low haze | Injection molding | Soft clear covers, flexible windows |
| TPU-ALP Optical 90A | 90A | Balanced stiffness, transparency, impact resistance | Injection molding | Transparent housings, lens covers |
| TPU-ALP Optical 40D | 40D | Higher modulus, dimensional stability, low haze | Injection molding / thin sheet | Optical-grade panels, rigid clear parts |
| TPU-ALP Optical Overmold | 85A | Adhesion to PC/ABS, transparent, soft-touch | 2-shot / insert overmolding | Clear buttons, optical bezels, grip areas |
Note: Optical performance depends on molding conditions, part thickness and tool design.
We can support molding window optimization to minimize haze and flow marks.
Key Advantages
- Aliphatic backbone for non-yellowing performance under sunlight and UV exposure.
- High transparency and low haze for clear covers, windows and lenses.
- Impact and chip resistance superior to many rigid transparent plastics.
- Soft, flexible options for parts that must absorb shock or seal against other components.
- Overmolding grades that bond to PC/ABS while remaining clear and soft-touch.
Processing & Recommendations
To achieve the best optical quality, we recommend:
- Drying the pellets at 80 °C for 3–4 hours to control moisture and bubbles.
- Injection melt temperature typically 190–220 °C, adjusted by hardness and part thickness.
- Using polished or highly polished mold surfaces to minimize flow marks and haze.
- Optimizing gate design and flow path to avoid weld lines in critical optical zones.
- For overmolding grades, matching substrate and TPU processing windows to ensure bonding and clarity.
Application Gallery
Examples of transparent and optical parts made with aliphatic TPU:
Target Markets
- Manufacturers of lighting and sensor modules using transparent covers and lenses.
- Molders of protective housings and windows for devices, instruments and equipment.
- Producers of soft-touch optical bezels and clear overmolded buttons on electronics.
- Engineering teams upgrading from rigid transparent plastics to tougher, flexible clear TPU parts.
Request Samples / TDS
Designing transparent or optical parts that must stay clear and resist impact?
Contact us for aliphatic TPU Optical Series samples and technical data sheets matched to your target hardness,
clarity and molding requirements.
Explore related materials:
Aliphatic TPU Overview |
Aliphatic TPU PPF & Protection Film |
Aliphatic TPU Outdoor Film & Sheet
